Maryland vs. Navy, College Park, Md.
Army vs. Johns Hopkins, West Point, N.Y.
AAU jr. men's 3-meter and jr. women's 1-meter diving championships, New Orleans.
AAU Boys and Girls, So. Pacific Age Group Championships, Lynwood, Calif. (also April 29).
World Tennis Tour, Quebec City, Que.
Track & Field
Colorado Relays, Boulder, Col.
Final Olympic team trials, Los Angeles (through May 5).
SUNDAY, APRIL 29
NASCAR 150-lap Convertible Championship Circuit race, Greensboro, N.C.
NASCAR 100-mile Grand National Championship Circuit race, Richmond, Va.